Sound spectrogram of 2 s of fighting at 25.4°C. (from WTL484-54).Dominant frequency of all components 4.0 kHz.Click on spectrogram to hear graphed song.

Sound spectrogram of 2 s of fighting at 25.0°C. (from WTL484-56).Dominant frequency of all components 4.0 kHz.Click on spectrogram to hear graphed song.

Gryllus fultoni overwinters as a late juvenile and matures in spring. In most of its range there is a single generation. However, in north Florida some of the progeny of the spring adults mature in late summer and lay eggs that hatch in fall. It is uncertain whether juveniles from this partial second generation contribute to the following spring’s cohort of adults. (Walker 1974, Fig. 1 and text).